XmlElementAttribute.cs

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using System.Diagnostics.CodeAnalysis;
using System.Xml.Schema;
 
namespace System.Xml.Serialization;
 
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.ReturnValue, AllowMultiple = true)]
public class XmlElementAttribute : Attribute
{
    private string _elementName;
 
    private Type _type;
 
    private string _ns;
 
    private string _dataType;
 
    private bool _nullable;
 
    private bool _nullableSpecified;
 
    private XmlSchemaForm _form;
 
    private int _order = -1;
 
    public Type? Type
    {
        get
        {
            return _type;
        }
        set
        {
            _type = value;
        }
    }
 
    public string ElementName
    {
        get
        {
            if (_elementName != null)
            {
                return _elementName;
            }
            return string.Empty;
        }
        [param: AllowNull]
        set
        {
            _elementName = value;
        }
    }
 
    public string? Namespace
    {
        get
        {
            return _ns;
        }
        set
        {
            _ns = value;
        }
    }
 
    public string DataType
    {
        get
        {
            if (_dataType != null)
            {
                return _dataType;
            }
            return string.Empty;
        }
        [param: AllowNull]
        set
        {
            _dataType = value;
        }
    }
 
    public bool IsNullable
    {
        get
        {
            return _nullable;
        }
        set
        {
            _nullable = value;
            _nullableSpecified = true;
        }
    }
 
    internal bool IsNullableSpecified => _nullableSpecified;
 
    public XmlSchemaForm Form
    {
        get
        {
            return _form;
        }
        set
        {
            _form = value;
        }
    }
 
    public int Order
    {
        get
        {
            return _order;
        }
        set
        {
            if (value < 0)
            {
                throw new ArgumentException(System.SR.XmlDisallowNegativeValues, "Order");
            }
            _order = value;
        }
    }
 
    public XmlElementAttribute()
    {
    }
 
    public XmlElementAttribute(string? elementName)
    {
        _elementName = elementName;
    }
 
    public XmlElementAttribute(Type? type)
    {
        _type = type;
    }
 
    public XmlElementAttribute(string? elementName, Type? type)
    {
        _elementName = elementName;
        _type = type;
    }
 
    internal bool GetIsNullableSpecified()
    {
        return IsNullableSpecified;
    }
}